* {
    margin: 0;
    padding: 0;
}

li {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
}

.classes_box {
    margin: 0 20px 10px;
    box-shadow: rgba(99, 99, 99, 0.2) 0 2px 8px 0;
    display: flex;
    padding: 20px;
}

.classes_box li {
    margin-right: 40px;
    color: #555666;
}

.header {
    margin: 0 20px 10px;
    box-shadow: rgba(99, 99, 99, 0.2) 0 2px 8px 0;
    display: flex;
    padding: 20px;
}

.nav {
    width: 1200px;
    margin: 20px auto;
}

.nav li {
    border-bottom: 2px #fafafa solid;
    padding: 20px;
}

.nav li h4:hover {
    color: cornflowerblue;
}

.nav li div {
    display: inline-block;
}

.nav li .left {
    width: 800px;
}

.nav li .right img {
    width: 200px;
    height: 90px;

}
.nav li .lift .time-info{
    font-size: 14px;
    color: #555666;
}

.bottom-info {
    text-align: center;
    margin-top: 20px;
    color: #555666;
}